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C.V. Joints Explained: What Is a C.V. Joint and How Does It Drive Power to Wheels?
Yuhuan Bayzo Machinery Co., Ltd. is a professional manufacturer of Constant Velocity Joints and drive shafts, based in Yuhuan, Zhejiang — China's automotive parts manufacturing hub. We handle R&D, production and sales in one facility, supplying complete CV axle assemblies and drive shaft components to automotive aftermarket customers in Europe, America, the Middle East, Southeast Asia, Africa and Australia.
Our Automotive Constant Velocity Drive Shafts range covers front-wheel and four-wheel-drive applications, from full half-shaft assemblies with inner and outer joints and boots to individual stub shafts, tripod joints and fitting kits. Annual drive shaft production exceeds 300,000 units, supported by CNC turning, milling and grinding, assembly and final inspection.
What We Manufacture in This Category
A drive shaft transfers torque from the transmission or differential to the wheel while absorbing plunge, articulation and bending loads across acceleration, braking, cornering and uneven road surfaces. We build both complete assemblies and the components that make them serviceable, so aftermarket programs can be supplied at assembly level or at part level depending on the repair profile of each market.
Complete Drive Shaft Assemblies
Fully assembled CV axles with inner and outer joints, boots, grease, clamps and nuts — ready for direct replacement fitment. Includes front axle shafts, half shafts and assemblies with intermediate support.
Drive Shaft Components
Stub shafts, axle shafts, tripod bearings, inner and outer CV joints, rubber boots, retaining strips, clamps, nuts and lubricating grease for repair-level supply.
Both ranges sit alongside our C.V. Joints program, which includes Inner C.V. Joints, Outer C.V. Joints, Tripod Joints and CV boot kit supply.
Range and Application Matching
The table below shows how our supplied range maps to typical vehicle and repair applications. Reference numbers are examples from our current catalogue; we build to OE numbers, customer samples or drawings.
| Product Type | Typical Application | Key Configuration Variables |
|---|---|---|
| Complete CV axle assembly | Front-wheel drive replacement, workshop repair | Shaft length, spline count, joint type, ABS ring, boot material |
| Assembly with intermediate support | Unequal-length half shafts, higher-power drivetrains | Bearing bracket position, shaft diameter, balance requirement |
| Four-wheel drive / SUV axle shaft | SUV and 4WD front axle replacement | Torque rating, joint articulation angle, sealing arrangement |
| Stub shaft / axle shaft | Component-level repair and assembly programs | Spline profile, hardness, surface finish, length tolerance |
| Boot, grease and fitting kit | Joint reconditioning and preventive maintenance | Boot compound, clamp type, grease grade and fill quantity |
Materials, Machining and Critical Specifications
Drive shafts work under combined torque, impact and bending load, so material selection and heat treatment drive service life. We machine shafts and joint housings on CNC turning, milling and grinding equipment, controlling the dimensions that determine fitment and NVH behaviour.
- Shaft body: medium-carbon or alloy steel, induction hardened in the bearing and spline zones.
- Splines: profile, count, pressure angle and fit class matched to the mating joint or hub.
- Joint interfaces: ball-type outer joints for steering articulation; tripod or inner joints for plunge.
- Boots: rubber or thermoplastic compound selected for temperature range and grease compatibility.
- Balance: assemblies checked for running balance to limit vibration at road speed.
- Surface protection: anti-rust treatment on exposed shaft sections and joint housings.
Typical catalogue examples include the 43430-60040 High Toughness Automotive Constant Velocity Axle, the SA3HE-2203020A CV Axle Assembly with Intermediate Support and the 43430-0K070 Heavy Duty CV Joint Axle Shaft.
Custom Development and OEM/ODM Support
We develop drive shafts from OE numbers, physical samples or dimensional drawings. The workflow starts with product matching against the target vehicle, moves to sample confirmation, then to batch production once the sample is approved. This suits aftermarket programs that need coverage across several vehicle platforms without holding a single fixed catalogue.
- Reverse-engineering from a supplied sample or worn unit.
- Dimension and spline verification before tooling or first article.
- Sample submission for fitment and road test before volume release.
- Custom packaging, brand labelling and private-label supply.
- Batch and category inventory management for repeat order response.
Quality Control and Acceptance
Quality control runs from incoming raw material through machining, heat treatment, assembly and packing. Incoming material is checked before release to production; machined parts are inspected against drawing dimensions; assemblies are checked for fitment, appearance consistency and function before shipment.
- Raw material verification and batch traceability.
- In-process dimensional checks on shafts, splines and joint housings.
- Assembly checks covering boot seating, clamp torque and grease fill.
- Final inspection and pre-shipment order check.
- Inspection records and sample retention for repeat orders.
Installation, Maintenance and Serviceability
Correct installation protects joint life. Shafts should be fitted without forcing splines, with new nuts and clamps where specified, and with the boot positioned so it is neither stretched nor pinched at full droop. After fitting, a road test confirms balance and confirms there is no binding through the steering range.
For maintenance programs, the boot is the first wear item: a split or hardened boot allows grease loss and water ingress, which is the usual cause of joint noise and play. Supplying boot kits, grease and clamps alongside assemblies lets distributors support both repair and preventive replacement.
Information We Use to Configure Your Solution
A workable proposal needs the working point, the vehicle match and the commercial format. The matrix below shows what we ask for and why it changes the configuration.
| Information | Why We Need It |
|---|---|
| OE number, sample or drawing | Identifies the correct shaft length, spline and joint combination |
| Vehicle model, year, transmission and drive layout | Confirms front/rear position, AT/MT variant and joint type |
| Quantity per reference and order pattern | Sets batch size, packing format and inventory planning |
| Packaging and branding requirements | Determines neutral, custom or private-label packing |
| Destination market and documentation needs | Shapes labelling, marking and shipping documentation |
Frequently Asked Questions
Do you supply complete assemblies or only components?
Both. We build complete CV axle assemblies with inner and outer joints, boots, grease, clamps and nuts, and we supply component-level parts such as stub shafts, axle shafts, tripod joints and boot kits for repair programs.
Can you develop a shaft from a sample or OE number?
Yes. We support development from customer samples, drawings or OE numbers, including dimension verification, sample confirmation and then batch production once the sample is approved.
How is quality controlled before shipment?
We control raw material intake, machining dimensions, assembly steps and final inspection, then check each order before shipment for fitment accuracy and appearance consistency.
Do you offer custom packaging and branding?
Yes. We provide packaging solutions, brand labelling and related customization based on customer requirements, alongside neutral packing for distributors who prefer it.
Which markets do you currently serve?
Our products serve the domestic Chinese market and are exported to Europe, America, the Middle East, Southeast Asia, Africa, Australia and other regions.
What lead time should we plan for a new reference?
Timing depends on whether the reference already exists in our catalogue or needs sample development. Once the OE number, sample or drawing is confirmed, we schedule sampling and batch production and confirm the delivery plan with the order.
